Clutch for metallic piling.



G. T. BV-BNNETTE. CLUTCH FOR METALLIC FILING. APPLICATION FILED 11111125, 1910'.

985,150. I I v Patented Feb128, 1911.

Ta i mam 6/09/24 E6 77 E VE/V/Vf T 75 CHARLES THOMAS EVENNETTE, OF LONDON, ENGLAND.

CLUTCH FOR METALLIC FILING.

Specification of Letters Patent.

Patented Feb. 28, 1911.

Application filed June 25, 1910. Serial No. 568,852.

To all whom it may concern:

Be it known that I, CHARLES THOMAS EVENNETTE, a subject of the King of Great Britain, residing at London, in the county of Middlesex, England, have invented a new an useful Improvement in Clutches for Metallic Piling, of which the following is a specification.

My invention has reference to clutches for use with metallic piling and has for its object to provide an improvedclutch or look-- ing clip whereby an interlocking joint may be readily made between the adjacent sections of metallic piling without the necessity of employing bolts rivets or other like fastening means.

The invention relates more particularly to metallic piling of that type in which sheets of metal of channel section are used and heretofore considerable dufficulty has been experienced in constructing piling of this description which shall possess the maximum of strength when in position and yet be capable of being pulled after use without damage and used afterward for ordinary constructional work for which channel sections are ordinarily intended for it will be understood that one of the most, if not the most, useful advantage of metal sheet piling is its adaptability to continuous usage by being pulled and reused after the work to be done through its temporary application has been completed, and it is therefore advisable that the original strength and the general usefulness of the channel sections should not be lessened by the presence of holes and rivets.

In all present systems of metal piling composed of channel sections where it is desired that such sections should be entirely free from holes and rivets so as to preserve their original strength and general usefulness in order that they may be repeatedly used as piling and afterward used for or dinary constructional work if required it is usual to arrange the channel sections with their webs all on one side of a horizontal line parallel to the webs of the channel sections and through the center of the flanges. On the other hand where the webs of the channel sections have been placed alternately on opposite sides of such a horizontal line it has owing to the'lack of an effective clutch or looking piece to allow of such a disposition been necessary to resort to more or less holing and riveting through the flanges or webs of a large proportion of the channel sections an operation which detracts from their salvage value and lessens their original strength. From the point of view of efficiency however it is advisable that the webs should be arranged alternately as by keeping all the webs on one side when the piling is in position there is not so great a least moment of inertia (through the neutral axis parallel to the web) and section modulus on one side of the interlocked piling obtained from any given area of metal in the web of the channel section as is obtained by using the same area of metal and placing the webs alternately on opposite sides of a central horizontal line parallel to the webs. By the latter means the least moment of inertia of the interlocked piling is increased and the section modulus is uniform 011 both sides and greater in each case thus making the interlocked piling stronger and capable of resisting a greater lateral thrust from either side.

By means of the clutch hereinafter described all channel sections can be employed without being holed or riveted in any way and greater strength in the interlocked piling for any given area of metal in the web by comparison due to placing the webs alternately on opposite sides of the horizontal center line is obtained.

Now the object of my present invention is to provide a clutch or looking clip for use with metallic piling having means which will permit sheets of channel section to be so arranged that the webs of each sheet are situated alternately with respect to a horizontal linethrough the center of the piling and to be retained in this position without the employment of rivets or other fastening means.

With these and other ends in view the invention comprises a joist of substantially double T section the flanges of which are so shaped as to form retaining means for securely holding the channel sections in po sition with the webs of each sheet alternating with respect to a horizontal line parallel to the webs and through the center of the flanges of said channel section.

In order that my invention may be readily understood and carried into effect by those skilled in the art to which it appertains I will now proceed to describe the samefully for. which purpose reference is.

;1 to-.be had to the accompanying sheet of "drawings in which g Y 7 gll igure 1 represents a top plan view of a rolled steel or iron clutch or looking. piece embodying' my invention for use with mes tallic piling. Fig. 2 is a modified form of construction 'of the same showing the clutch built up of'steel or iron Z bar. Fig. 3 1s a top plan View of a portion ofmetalli'c piling, in accordance with my invention showing two of my improved clutches in hich are engaged adjacent sheets of chan-. nel section; I i My' improved clutch or. locking piece as shown in Fig. 1 comprises a rolled steel or iron joisthaving a central'web a and four flanges b d and e. Flanges c and at project approximately at right angles from one top and one bottom corner respectively on opposite sides of the web a while the other flanges tion the ends-of the flanges g of the channel sections.

that the flanges g ofthe' sheets of channel sections are arranged close to and parallel V with the webs a of the clutches the webs h of each of the channel sections occupying a position uponopposite sides of a line drawn at right angles to and through the centers of the; webs a of the; clutches. It

will be seen that by means of this arrangeg ment the flanges g of the channel sections will be supported and retained in position by thefianges b e of the-clutches while the webs It will be supported at theiriends by the flanges cl 6 thussecuring a firm interlocking of the parts throughout the entire length of the piling without necessitating V the employment of rivets or like fastening means. 1

- n1 the modification illustrated Fig. 2

I'have shown means whereby ordinary Z so bars and angle irons may be utilized to produce my improved clutch and in this form of my invention to the outside of each of the flangesz' of an ordinary 2 bar of suit- I able dimensions an angle bar 7' issecured by means of rivets 75 preferably countersunk on "the inside of the clutch as shown on the drawing. Clutches constructed in thisway may be employed in a: mannersi mil ar to i those first above described.

Althou-gh I have described my inventio as applicable for use with metallic'p-il ing Yes inlwhich channel sections are used it is to be understood that I do not desire to limit its use thereto as it is conceivable-that its sphere of'utility may embraceother forms of metallic piling having flanges at the ends of each section.

It will be seen. that a clutch for use with metallic piling under my present invention '5 possesses many important advantages over clutches or locking clips heretofore proposed for like purposes it admits of the piling being v readily driven and withdrawn and owing to' the fact that it is unnecessary to resort to riveting for any part of the piling, the maximum salvage value is obtained after withdrawal. VVh'en in position it forms a watertight joint of great strength and rigidity'the whole line of piling possessing the maximum degree of resistance to lateral thrust. 1 7 What I claim and desire to secure by Letters Patent of the United States of America 1s":- I

1. In metallic piling aclutch comprising a -Web" portion flanges projecting from said web portionto form means for holdin and su po'rti-n' channel section piling wit the w s thereo alternating on: both sides of a horizontalline through the center of the piling and channel sections interlocked with said clutch for the par oses specified.

2. In metallic pil ing'the combination with a clutch member comprising a web portion having oppositely directed ri ht angled flangesprojecting therefrom an oppositely directed flanges having portions lying in a plane parallel to saidcentral web portion also proj ecting therefrom and channel sections engaged in said clutch with the webs thereof a lt'ernatin I on both sides of a horizontal line throng the center of the piling for the purposes specified.

In metallic p1l=i ng the combination with metallic sheet piling of a clutch member comprising a web portion flanges projecting from each corner of saidvv web ortion two of said flanges v forming means for supporting the corners of the sheets of channel sectrons and two of said flanges forming means for holding the flange portions of said channel sections with the webs thereof alternating on bothsides of a horizontal line through the center of the piling and channel sections interlocked with said clutch members for the purposes specified,

L IIIlHiZitlllC piling 'the combination with a clutch member corn rising a web portion having oppositely dlrected right tangled flanges projecting therefrom oppositely directed right angle: bars riveted to the flanges of said web portionto form means for supporting and holding channel section'swith the: webs thereofalternating on both sides of a horizontal line'through the center of the piling and channel sections interlocked with said clutch members substantially as described witlr reference to Fig. 2 of the ac- ;ompanying drawings for the purposes set ort 5. In metallic piling the'combination With member with the Webs thereof alternating on 10 a clutch member comprising a Web portion both sides of a horizontal line through the having right angled flanges projecting from center of the piling for the purposes speciopposite corners of said Web portion an upfied. wardly directed flange and a downwardly directed flange projecting from the remain- CHARLES THOMAS EVENNETTE' ing two corners of said Web portion and me- Witnesses; tallic piling having flange portions engaged A. G. WHITE, in and interlocked by the aforesaid clutch E. M. JONES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

